Foreword
Introduction
1 Scope
2 Normative references
3 Symbols, definitions and units
4 Principle
5 Reagents and equipment
5.1 Reagents
5.2 Equipment
6 Sampling and samples
6.1 Sampling
6.2 Sample storage
7 Procedure
7.1 Sample preparation
7.2 Preparation of the sources to be measured
7.3 Counting procedure
8 Expression of results
8.1 Calculation of activity concentration
8.2 Decision threshold
8.3 Detection limit
8.4 Confidence interval limits
8.5 Calculations using the activity per unit of mass
9 Test report
Annex A (informative) - Numerical applications
Annex B (informative) - Distillation of large volume sample
Annex C (informative) - Internal standard methods
Annex D (informative) - Distillation of small volume sample
Annex E (informative) - Screening method for wet matrices
Bibliography